Gold nanoparticles supported on Al2O3 using Tabebuia aurea leaf extract and catalytic properties for methylene blue reduction

A. Maulidya, Y. Yulizar, T. Utari, D. O.B. Apriandanu

Research output: Contribution to journalConference articlepeer-review

2 Citations (Scopus)


In this research, we reported a cost-effective and an environmentally friendly technique for synthesis of gold nanoparticles supported on alumina (Al2O3/AuNPs) using Tabebuia aurea leaf extract (TAE) as non-toxic reducing agent, efficient stabilizer, and weak base source without adding any surfactants. Al2O3/AuNPs was characterized using various techniques including UV-Visible Spectrophotometer, Fourier-transform Infrared (FT-IR) spectroscopy, X-Ray diffraction (XRD), and Particle Size Analyzer (PSA). AuNPs was successfully synthesized using HAuCl4 as precursor. The characterization of UV-Vis Spectrophotometer shows that AuNPs colloidal was formed at 0.15 % TAE. FTIR characterization of Al2O3 shows Al-OH band at 1505 cm-1 and Al-O band at 680 cm-1. Phase of Al2O3 was amorphous confirmed by XRD. The particle size distribution average of Al2O3/AuNPs was about 43 nm. The reduction percentage of methylene blue using Al2O3/AuNPs catalyst was 70.41 % for 120 min.

Original languageEnglish
Article number012049
JournalIOP Conference Series: Materials Science and Engineering
Issue number1
Publication statusPublished - 28 Apr 2020
Event3rd International Symposium on Current Progress in Functional Materials 2018, ISCPFM 2018 - Depok, Indonesia
Duration: 8 Aug 20189 Aug 2018


  • AlO/AuNPs
  • catalytic activity
  • methylene blue reduction
  • Tabebuia aurea


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